PH help and question

[marie]

Originally Posted by PzReefer

Second maybe your effluent pH is too low i started at 6.5 when i first started my Ca reactor and had similar spikes in pH downward when lights off. Now I use 6.65 for my reactor target with much less swing in pH.

A ph of 6.65 worked for me when I started with the reactor but when the growth switched into high gear I had to drop the ph down to 6.5 just to keep up with the calcium demand